HARKEN 57 mm Carbo Fiddle Block - Swivel, Becket, 2622 Block Size_57 mm and spinnaker control applications on

and spinnaker control applications on one-design classes and sport boats up to 33 feet as well as control line applications on larger boats

Element’s design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing

Delrin sheave and ball bearings

spinnaker controls

and Aluminum cheeks and Delrin (tm) ball bearing sheaves (506 series)

HARKEN 57 mm Carbo Fiddle Block - Swivel, Becket, 2622 Block Size_57 mm and spinnaker control applications onThe Harken 57mm fiddle Block with Becket is a good choice for 3: 1 and 4: 1 tackles on dinghy vangs and mainsheets. Low friction Carbo AirBlocks are lightweight, strong, reliable, and economical. Consistently 30% lighter and 60% stronger than equivalent Classic blocks. The sideplates are UV stabilized, high strength resin and designed for small diameter lines favored by racers. Good for jib and mainsheet systems on high performance dinghies, and for